When the CPU overheats then it will shut down (i.e. thermal overload) and won't boot up again until it has cooled down. If this is the problem is not fixed then the CPU will eventually fail. A faulty fan causes the problem or the fan and heat sink assembly are clogged with dust. Check the CPU fan to see if it spins freely, if not replace the fan. If the fan and heat sink is clogged with dust the remove the dust and make sure the vents are clear and dust free. Use a small brush and can of compressed air to do this.

Air is used to cool the hardware components inside a laptop.If the cooling system is clogged with \'Gunk\', the cooling capacity drops tremendously.

If a Processor overheats it turns off. (BIOS turns it off)This is a fail safe feature that is built-in. Keeps the Processor from burning up.

B) A Processor has Thermal Paste applied in-between it, and the small metal plate of the Cooling Tube; which sits on it.

The graphics chipset usually has a Thermal Pad on top. (And under the metal plate of the Cooling Tube which sits on it)

A Thermal Pad is a material that is impregnated with Thermal Paste.

Thermal Paste dries up over time, and the constant heat inside the laptop.When it does it looses it\'s thermal conductivity properties.

[The top if a Processor, and the bottom of the small metal plate of the Cooling Tube, which sits on it; are Not perfectly smooth.A magnified view would detail, \'Hills, Valleys, and Pitholes\'

Mate the two parts together, and air pockets are created in-between them.Air is an Insulator in this case, not a Conductor.Thermal Paste fills the above mentioned imperfections, and is an Excellent conductor of heat. (Good thermal properties)

So,..........what is the laptop manufacturer name, and model number?The model number can be found on the Bottom of the laptop.

(For an HP, or Compaq; there is a white Service Tag on bottom.P/N = Product Number, and what is needed.S/N = Serial Number, and this = NO.Do not post S/N on a public worldwide forum such as this.ONLY give to an authorized agent )

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Yeah after boot up the cooling fan should kick in. If it does not and it is a laptop it will get too hot in there. Thermal Shutdown protection will kick in, if it is equip. If in 2-3 minutes it got so hot reaching its preset temperature shutdown, it will be down to prevent damage to the system.

This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input/device and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. MAY BE INTERMITTENT, SELF-DIAGNOSIS ERROR 23 OR 24. CHECK SOLDER CONNECTIONS AT CONNECTOR "DY" ON THE YOKES. 2. SHUTDOWN AT POWER WITH SELF-DIAGNOSIS ERROR 23 OR 24. CHECK C411 2200 UFD 35 V AND C412 10 UFD 50 V, BOTH LOCATED ON THE MAIN PCB.

This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input/device and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. MAY BE INTERMITTENT, SELF-DIAGNOSIS ERROR 23 OR 24. CHECK SOLDER CONNECTIONS AT CONNECTOR "DY" ON THE YOKES. 2. SHUTDOWN AT POWER WITH SELF-DIAGNOSIS ERROR 23 OR 24. CHECK C411 2200 UFD 35 V AND C412 10 UFD 50 V, BOTH LOCATED ON THE MAIN PCB